#include <stdint.h>
#include <stddef.h>
#include <umalloc/umalloc.h>
#include <sysdefs/mman.h>
#include <system/system.h>
#include <errors.h>
#include <linklist.h>
#include <string/string.h>
#include <util/util.h>
#include <assert.h>

void *umalloc(size_t size) {
  size_t allocsz = ALIGN_UP(size, 4096);
  uint8_t *out;
  int32_t ret = mman_map(NULL, allocsz, MMAN_MAP_PF_RW, 0, &out);
  if (out == NULL || ret != E_OK) {
    return NULL;
  }
  return out;
}

void ufree(void *addr) {
  if (addr != NULL)
    mman_unmap(addr);
}

void *urealloc(void *addr, size_t oldsize, size_t newsize) {
  void *tmp = umalloc(newsize);
  if (tmp == NULL) {
    return NULL;
  }
  string_memset(tmp, 0, newsize);
  string_memcpy(tmp, addr, oldsize);
  ufree(addr);
  return tmp;
}